Quarterly report pursuant to Section 13 or 15(d)

Segment Information - Segment Information (Parenthetical) (Details)

v2.4.0.8
Segment Information - Segment Information (Parenthetical) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Segment Reporting Information [Line Items]        
Commissions $ 109,575 $ 101,469 $ 316,520 $ 293,507
Ladenburg
       
Segment Reporting Information [Line Items]        
Temporary subordinated loan 25,000   25,000  
Series A Preferred Stock
       
Segment Reporting Information [Line Items]        
Commissions       5,148
Series A Preferred Stock | Employee brokerage commission expenses
       
Segment Reporting Information [Line Items]        
Commissions       2,603
Series A Preferred Stock | Ladenburg
       
Segment Reporting Information [Line Items]        
Commissions       4,240
Series A Preferred Stock | Ladenburg | Employee brokerage commission expenses
       
Segment Reporting Information [Line Items]        
Commissions       2,545
Series A Preferred Stock | Independent brokerage and advisory services
       
Segment Reporting Information [Line Items]        
Commissions       $ 908